X = int(input())
b = 400
cnt = 8
 
a = (X - b) // 200
for i in range(1,9):
    a = (X - b) // 200
    if  0 <= a < 1:
        print(cnt)
        break
    else:
        cnt -= 1
        b += 200 X = int(input()) X int(input()) int input() input b = 400 b 400 cnt = 8 cnt 8 a = (X - b) // 200 a (X - b) // 200 X - b X b 200 for i in range(1,9):
    a = (X - b) // 200
    if  0 <= a < 1:
        print(cnt)
        break
    else:
        cnt -= 1
        b += 200 i range(1,9) range 1 9 a = (X - b) // 200 a (X - b) // 200 X - b X b 200 if  0 <= a < 1:
        print(cnt)
        break
    else:
        cnt -= 1
        b += 200 0 <= a < 1 0 <= a 0 a 1 print(cnt) print cnt break cnt -= 1 cnt 1 b += 200 b 200 X = int(input()) int(input()) X cnt = 8 8 cnt a = (X - b) // 200 (X - b) // 200 a a = (X - b) // 200 (X - b) // 200 a cnt -= 1 1 cnt b += 200 200 b b = 400 400 b
X = int(input())
b = 400
cnt = 8
 
a = (X - b) // 200
for i in range(1,9):
    a = (X - b) // 200
    if  0 <= a < 1:
        print(cnt)
        break
    else:
        cnt -= 1
        b += 200